pwm_nrf_sw on the 54l15

[Christo Malan]

Hi 

Does the nrf-sw-pwm driver work on the nrf54l15. I am porting code form the nrf52840.

My output does not toggel, 0% and 100% does work but noting else.

[Håkon Alseth]

Hi,

 

Unfortunately, it is not a supported option for the nRF54L-series devices, as the node is deleted from the boards:

https://github.com/nrfconnect/sdk-zephyr/blob/v4.0.99-ncs1/dts/common/nordic/nrf54l_05_10_15.dtsi#L12

This is because the nrf54l has a GRTC, and not RTC peripheral.

 

I will make a feature request internally to support the nrf-sw-pwm driver.

 

Kind regards,

Håkon

[Christo Malan]

Hi 

That is why I recreated the node with timer23 like this. The sw pwm does have support for using a timer.

pwm_sw0: pwm_sw0 {
        compatible = "nordic,nrf-sw-pwm";
		status = "okay";
		generator = <&timer23>;
		clock-prescaler = <0>;
		#pwm-cells = <3>;
		channel-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
    };